Texas Instruments (TI) has introduced a high-efficiency, constant-frequency charge pump DC/DC converter that supports dual-mode operation to deliver optimal performance across a wide input voltage range. This compact 3 mm x 3 mm micro device comes with an I2C interface and is fully programmable, making it well-suited for use in mobile devices such as smartphones, PDAs, and multi-display handhelds. For more details, visit the official TI website.
The TPS60250 is designed to drive up to five white LEDs for the main display and two for the secondary display, ensuring consistent brightness through precise current control. It features an adaptive charge pump mode combined with a low dropout regulator, which maximizes efficiency when operating from a single Li-Ion battery. The I2C interface allows for four enable inputs, simplifying the control of independent displays. Additionally, the device can operate independently on the secondary display LED to reduce power consumption when needed.
Key features include:
- Input voltage range: 3 V to 6 V
- 1x and 1.5x charge pump configurations
- Fully programmable currents via I2C
- 64 dimming steps up to 25 mA for primary and secondary displays
- 4 dimming steps up to 80 mA for auxiliary applications
- Secondary LED current matching within 2% at light load (100 μA each)
- 750 kHz charge pump frequency
- Maximum output current of 230 mA continuously
- Automatic switching between 1x and 1.5x modes for optimal efficiency
- Built-in soft start and overcurrent protection
- Light detection capability
- 16-pin QFN package in a 3 mm x 3 mm footprint
The TPS60250 is now available in full production and can be purchased through TI and its global distributor network. This highly integrated solution is ideal for designers looking to optimize power efficiency and brightness control in modern portable electronics. Whether you're working on a smartphone, tablet, or other display-driven devices, the TPS60250 offers a flexible and efficient power management solution.
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